*Thriftem Bank is in the process of devising a loan policy that involves a maximum of $12 million. The following table provides the
pertinent data about the available types of loans.

Type of Loan/Interest Rate/Bad-Debt Ratio

Personal/0.14/0.1

Car/0.13/0.07

Home/0.12/0.03

Farm/0.125/0.05

Commercial/0.1/0.02

Bad debts are unrecoverable and produce no interest revenue.

Competition with other financial institutions requires that the bank
allocate at least 40% of the funds to farm and commercial loans. To
assist the housing industry in the region, home loans must equal at
least 50% of the personal, car, and home loans. The bank also has a
stated policy of not allowing the overall ratio of bad debts on all
loans to exceed 4%.*

^I know the above command finds a vector that minimizes the objective function, but I'm trying to find a vector that will maximize it and I don't how to go about doing so. I tried flipping the values in front of the coefficients but that didn't work. Any ideas?

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– user9660Nov 20 '14 at 3:57

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